Abstract

A number of results for the Tchen theory of dispersion of discrete particles by continuous turbulent motion are recalled. A Frenkiel family of Lagrangian correlation functions is used and the main results are rewritten in nondimensional form. The theory is completed by a new relation expressing the mean square of the relative particle velocity. The validity of the Stokes contribution to the Tchen equation of motion is examined. Numerical results are given and discussed.